HPLC法测定生脉颗粒(党参方)中五味子醇甲的含量

目的:建立生脉颗粒中五味子醇甲的含量测定方法。方法:用高效液相色谱法测定,选用C18色谱柱(5μm,4.6mm×250 mm),流动相:甲醇-水(60:40),流速:1.0 mL/min,检测波长:250 nm。结果:五味子醇甲在0.05～0.2μg范围内线性关系良好,r=0.999 9,平均回收率为95.87%(n=6),RSD为0.39%。结论:该方法简便、灵敏、准确、重现性好,可作为生脉颗粒中五味子醇甲的含量测定方法。     

高效液相色谱法测定大鼠血浆中的五味子甲素

【目的】建立高效液相色谱(HPLC)法测定大鼠血浆中五味子甲素的方法。【方法】以甲醇沉淀蛋白,色谱柱为C18柱(Intersil:150 mm×4.6 mm,5μm),流动相为甲醇-乙腈-水(42∶40∶18),流速为1.0ml/min,检测波长为λ=254 nm。【结果】五味子甲素在0.1~5μg/ml范围内有良好的线性关系:Y=0.3047C 0.0315,r=0.9975(n=5)。五味子甲素的方法平均回收率为95.36%,RSD为4.48。日内精密度RSD为1.99%。日间精密度RSD为2.87%。【结论】首次建立了测定五味子甲素血药浓度方法,该方法简便、快速,适于测定鼠血浆中的五味子甲素。     

HPLC法同时测定复方五仁醇软胶囊中绿原酸、芍药苷、五味子醇甲、五味子乙素

目的建立HPLC双波长法一次进样同时测定复方五仁醇软胶囊中绿原酸、芍药苷、五味子醇甲、五味子乙素4种主要有效成分含量的方法。方法采用Lichrospher C18色谱柱,流动相为乙腈-0.2%磷酸水,梯度洗脱,双波长检测(λ1=230nm、λ2=327nm),柱温35℃,体积流量1.0mL/min。结果绿原酸在316~19.75μg/mL(r=0.999 1)、芍药苷在208~13μg/mL(r=1.000 0)、五味子醇甲在656~41μg/mL(r=0.999 8)、五味子乙素在484~30.25μg/mL(r=1.000 0)范围内均成良好的线性。平均回收率分别为97.14%、98.41%、98.79%、102.16%,RSD分别为2.24%、2.85%、1.51%、0.68%(n=6)。结论本检测方法准确可靠、重复性好。可用于评价复方五仁醇软胶囊的质量。     

高效液相色谱法测定复方北五昧子片中五味子醇甲的含量

目的:为了建立测定复方北五味子片中五味子醇甲含量的方法。方法:采用高液相色谱法,以IhertsiI ODS-3vC18(Φ4.6×250mm,5μm)色谱柱分离,以甲醇:水=65:35为流动相,流速为1.0ml.min-1,检测波长250nm。结果:结果发现线性范围0.0414μg~0.3726μg,r=0.9999,测得平均回收率102.24%,RSD=2.76%。结论:高效液相色谱法简便、准确、灵敏度高、准确度好,可作为复方北五味子片含量测定的方法。     

RP-HPLC法测定五味子中三种成分的含量

目的:建立反向高效液相色谱法测定五味子中五味子醇甲、五味子甲素、五味子乙素含量的方法。方法:采用SUNTEK Kromasil C18柱(4.6 mm×250 mm,5μm),Dikma Kromasil C18柱(4.6 mm×250 mm,5μm),以水-甲醇梯度洗脱为流动相,流速:1 mL/min,检测波长:254 nm。结果:五味子醇甲、五味子甲素、五味子乙素进样量均在0.02μg~1.0μg范围内与峰面积有良好线性关系,r2=0.999 9、1.0、0.999 8;平均回收率分别为98.5%、98.1%、98.6%;RSD分别为1.2%、1.4%、2.4%(n=9)。结论:该方法方便、准确、专属性好,适用于五味子的质量控制。     

高效液相色谱法同时测定双五胶囊中4种有效成分的含量

目的建立同时测定双五胶囊中紫丁香苷、五味子醇甲、五味子甲素、五味子乙素含量的方法。方法HPLC法,采用Diamonsil C18柱(200mm×4.6mm,5μm),流动相为A:甲醇-乙腈(1∶1),B:水,梯度洗脱,0～5min,35%～60%A;5～10min,60%～70%A;10～50min,70%～90%A;50～90min,90%A。流速为1ml/min,柱温:35℃,检测波长220nm。结果紫丁香苷、五味子醇甲、五味子甲素、五味子乙素浓度分别在1.28～20.40μg/ml(r=0.9997)、6.30～100.80μg/ml(r=0.9996)、1.20～19.20μg/ml(r=0.9998)和3.75～60.00μg/ml(r=0.9996)范围内呈良好的线性关系。4种成分精密度实验RSD<1%。24h内稳定性RSD<1.5%。紫丁香苷、五味子醇甲、五味子甲素、五味子乙素的平均加样回收率分别为99.47%、102.50%、99.21%、101.86%。结论所建立的方法具有快速、简便、准确等优点,可用于双五胶囊的质量控制。     

HPLC法测定更年安片中五味子甲素和五味子乙素的含量

目的测定更年安中五味子甲素和五味子乙素的含量.方法样品用环己烷超声提取,过滤,蒸干.残渣用乙腈-甲醇(1∶1)溶解后,经HPLC仪测定.色谱柱PhenomenexC18柱(5μm,250mm×4.6mm),柱温22℃,流动相乙腈-甲醇-水(15∶15∶10),检测波长254nm.结果更年安中五味子甲素和五味子乙素与其它成分分离良好,保留时间分别约为14.6和19.1min.五味子甲素对照品线性浓度范围1.0～80μg/mL,r=0.9996,平均回收率为96.5%,RSD为3.28%(n=5).五味子乙素对照品线性浓度范围1.0～80μg/mL,r=0.9998,平均回收率为94.7%,RSD为3.49%(n=5).结论本法灵敏度高、操作简便、结果准确,可用于更年安中五味子甲素和五味子乙素的含量测定.     

RP-HPLC法测定更年舒片中五味子甲素的含量

目的:建立更年舒片中五味子甲素的HPLC含量测定方法。方法:采用反相高效液相色谱(RP-HPLC)法测定更年舒片中五味子甲素的含量,色谱柱为Hypersil ODS-C18柱(250×4.6 mm,5μm),流动相为乙腈-甲醇-水(15∶15∶10),流速为1 mL.min-1,检测波长为254 nm。结果:五味子甲素与样品中其它成分分离良好,线性范围0.023 2~0.580 6μg(r=0.999 7),平均回收率为96.5%。结论:RP-HPLC法用于更年舒片中五味子甲素的含量测定,灵敏度高、操作简便、结果准确。     

脑灵素胶囊质量标准研究

目的建立脑灵素片的质量标准。方法采用薄层色谱法对处方中枸杞子和淫羊藿进行鉴别,用高效液相色谱法测定五味子中五味子醇甲的含量。结果在TLC中均能检出枸杞子和淫羊藿;五味子醇甲在0.0812～1.543μg范围内线性关系良好(r=0.9997),平均回收率为100.6%,RSD=1.2%。结论所建鉴别方法专属性强,定量方法简便,准确,可用于脑灵素胶囊的质量控制。     

复方健肾颗粒的质量控制研究

目的建立复方健肾颗粒的质量标准,为其质量控制提供依据。方法根据2010版药典对于颗粒剂的质量要求,主要从性状、薄层鉴别、检查、含量测定等方面对复发健肾颗粒进行质量评价,其中以黄芪甲苷、腺苷对照品和熟地、黄精对照药材进行制剂的鉴别研究;建立HPLC法,测定制剂中黄芪甲苷和腺苷的含量。结果黄芪、熟地、黄精、蝉花的薄层斑点清晰,圆整,阴性制剂无干扰。粒度、水分、溶化性、装量差异符合要求。定量分析黄芪甲苷在2.70～9.45μg范围内的回归方程为:log(Y)=1.419log(X)+4.0412,R~2=0.9993,平均回收率100.45%,RSD为2.81%。复方健肾颗粒中黄芪甲苷含量限度为0.0356%,定量分析腺苷在浓度0.628～7.536μg/mL范围内的回归方程为:Y=74.354x+14.256,R~2=0.9993,平均回收率97.71%,RSD为1.95%。复方健肾颗粒中腺苷含量限度为0.005%。结论方法稳定可行,重复性好,操作简单、方便,适用于复方健肾颗粒的质量控制。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.